/* Copyright (c) 2022-2022, LiWangQian<liwangqian@huawei.com> All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 *    conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 *    of conditions and the following disclaimer in the documentation and/or other materials
 *    provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 *    to endorse or promote products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef LIBCFGM_LEXER_UTILS_H
#define LIBCFGM_LEXER_UTILS_H

#include <ctype.h>

#ifdef __cplusplus
extern "C" {
#endif

#define CFGM_LEXER_IS_WS(c) \
    ((c) == ' ' || (c) == '\t')

static inline bool cfgm_lexer_is_whitespace(char c)
{
    return c == ' ' || c == '\t';
}

static inline bool cfgm_lexer_is_eol(char c)
{
    return c == '\r' || c == '\n';
}

static inline bool cfgm_lexer_is_word_start(char c)
{
    return isalpha(c) || c == '_';
}

static inline bool cfgm_lexer_is_word_part(char c)
{
    return isalnum(c) || c == '_';
}

static inline bool cfgm_is_hex_digit(char c)
{
    return isdigit(c) || (c >= 97 && c <= 102) || (c >= 65 && c <= 70);
}

#ifdef __cplusplus
}
#endif
#endif /* LIBCFGM_LEXER_UTILS_H */
